Works as expectedBy Bobon 3/11/2014

Making sure it's rightBy Melvinon 1/19/2014

The fluid is great for making sure you are getting accurate readings from your equipment.

5 starsBy joseon 11/7/2013

jose would recommend this product to a friend

great product would buy again

GreatBy Mariaon 6/13/2013

Maria would recommend this product to a friend

Calibrates my pinpoint probe.
Works as described :)

great product, great priceBy Jasonon 5/16/2013

Jason would recommend this product to a friend

used to calibrate my apex works great. and very good price

great productBy GT-Reeferon 3/7/2013

GT-Reefer would recommend this product to a friend

I use the 7 and 10 and it works great. I pre rinse my probe in RO/DI, then start my calibration, but I will start using a little cal fluid to rinse away the water for a more accurate calibration.

Exactly what you expect, shipped lighting-fast by BRS.By Chuckon 8/13/2012

Chuck would recommend this product to a friend

This product works great, is very competitively priced, and I like knowing when I order items like this from BRS they'll arrive within a few days without hassles or delays. I'll definitely be getting more from BRS when I need them.

Worked like it shouldBy Andyon 8/1/2012

Andy would recommend this product to a friend

Worked nicely to calibrate my pinpoint probe.

Worked like it shouldBy Andyon 8/1/2012

Andy would recommend this product to a friend

Checked it against some other calibration fluid and it is dead on.

Cheap and easyBy Matthewon 2/22/2012

Matthew would recommend this product to a friend

Needed the 4 and 7 for my RFI pH controller. Easy to use. I've heard that some people will rinse the probe in some of the solution and pour the rest (3/4 or so) in a tall shot glass to make sure the probe is clear of water or other elements.

Does its job at a great priceBy Gregon 9/23/2011

Greg would recommend this product to a friend

Does what its supposed to at a great price. I put 3/4 of the packet in a tall skinny shot glass, and use the other 1/4 of the packet to "rinse" the water off the probe (after already rinsing in clean or RO water). Then I can let the probe stand up in the shot glass without worrying about a packet falling over.